Annealing furnace.



G. KUGBL. ANNEALING FURNACE. APPLICATION FILED 33mm 1013.

Patented Nov. 24, 1914 I lThllU @Tlrt'ld PAW]? @l l ltlllh CARL KUGEL, 0]? BRUNSWICK, GERMANY.

ANNEALIHG-FURNAGE.

Specification of Letters Patent.

Patented Nov. 3354, 191d.

Application filed September 20, 1913. Serial No. 7160,8051.

To all whom it may concern:

Be it known that l, CARL KUGEL, manufacturer, citizen of the Kingdom of Prussia,

hereinafter-described improvements in or relating to the cooling chambers of such furnaces/end their associated parts or adjuncts. I

An embodiment of the invention is illustrated in the accompanying drawing, in which-- Figures 1 and 2 are, respectively, a vertical section and 'a plan view of the improved furnace, the section being taken on line A-B--C, Fig. 2,

Referring more particularly to said drawing, the furnace is shown as comprising an upon the correspondin annular cooling chamber rz,-'which is open at its top and bottom, and, beneath the-same, a single charging chamber f and a single heating chamber c although no limitation to this number is contemplated, the chambers c and I having their upper ends couununieating with chamber (1. Upon the top of chamber a is mounted a rotatable cover 0, to which a step-by-stcp movement may be imparted either by hand or by the aid of suitable mechanism, (not shown), in any desired manner, thecover being formed at its inner and outer edges with depending flanges that project into oil-filled gutters I; provided upper edges of the Walls of chamber a. C amber f is provided with a suitable door a: which is removed therefrom during both the introduction hi the charges and their withdrawal after having' been annealed and cooled. The iron plates or other metal to be treated are deposited in skeleton frames 9, a plurality of which is made use of, and these frames are provided at their upper ends with lids a? that form the covers for the chambers c and 7 and are adopted to be raised and lowered within the chamber a, so as to lift the frames into the latter chamber from the said cha1nbers e and f, and vice versa. The frames may have any desired form, and each may consist, for example, of a base or bottom plate, to which two diamctricully-opposite, rtical rods are attached-,- lbe upper ends of said rods being connected to the lids d. In,

their lowered positions, the covers coecting" with the aforementioned chambers are do signed to form gas-tight joints therewith. Any desired means of mechanism may be utilized for effecting the movements just specified, that shown consisting of vertical racks 2', which are attached at their-lower ends to the covers and are operated through the agency of pinions it suitably mounted on cover 0, the arrangement being such, thercfore, that when any pinion'is rotated, the rack ass iated therewith, and, in consc quencc, the frame and lid connected to that rack, will be either raised or lowered, so cording to the direction of rotation.

The operation is obvious, .and may be, An empty frame stated, briefly, as follows. 7 is first brought above chamber f by the rotation of cover, a, and then lowered thereinto. The door at is removed from said chamber, the frame then charged with the plates or other metal, the door then replaced, and the said frame subsequently. raised into chamber (1.. Cover 0 is then rotated one stop in :1 clockwise direction, (Fig. 9), thereby bringing a second empty frame above chumher 7' and advancing the previously-charged frame toward the heating clurn'lber c. The second frame is then successively lowered into chamber 7, charged and returned to chamber a, in the manner already described, after which cover a is again rotated one step as before. This second step again brings an empty frame above chamber f, and it also brings the framefirst charged above chamber 0, the number of frames and the disposition of the said chambers c and f relative to each other being arranged with that object in view. The frames above said clmlnbcrs are then lowered thercinlx), the frame in the heating chamber remaining; in; the some smhciently long to permit the an: ncaling or other treatment to be. completed. During the remainder of its passage through chamber a, the frame containing the metal thus treated gradually cooled, such action being increased by fillirirthc central space defined by the inner wall of that chr nbcr with water or other suitable cooling medium, so that by the time that this frame ultimately returns to its original position above chamber f, the cooling operation will likewise have been completed. On reaching such position, the frameis lowered into said chamber, emptied, and recharged, after each step through lz'ich cover a is truned, a.

charged frame will be brought above chamher 6, and a second frame, Whose contents have been completely treated, above chamher 7", the latter frame being subsequently again charged and sent on its courscthrough the furnace.

lhc charging and enipt'yingbf theframe in the chamber 7 is readily effected, since the removal of the door a: affords ample access to said chamber; the metal being easily Slfii'liOd up upon or removed from the frame bottom plate, between the frame rods. If prefe red,- however, the frame may be detached bodily from (its lid and withdrawn from the chamber 7, both for charging and for emptying purposes, and subsequently again inserted in said chamber and connected to its lid. v

I claim as my invention L 1. A furnace of the character-specified comprising an open-bottomed cooling chain her; a charging chamber and a heating chamber located beneath the cooling. chamber and communicating directly therewith; a series of frames adapted to contain the metal to ,be treated; a cover rotatably mounted. upon saiolcooling chamber; indi-, vidual connections. between veach frame and said cover, whereby the frames will becaused to travel in acircular path through the cooling chamber When the cover is r0- tated; andineans for lowering or raising said connections to more said frames from said cooling chamber into and out of said charging and heating chambers.

' 2. A furnace of the character specified comprising an open-bottomed cooling chamber; a charging chamber and a heating chamber located beneath the cooling chamher and communicating directly therewith; a series of frames adapted to contain the metal to be treated; a cover rotatably mounted upon said cooling chamber; individual rack connections between each frame and the cover, whereby said frames Will be caused to travel in a circular path through the cooling chamber when the cover is rotated; and individual driving means connectedwvith the racks for lowering or rais ingthe same, to move the corresponding frames into and out of said charging and heating chambers.

In testimony whereof l have hereunto set my hand in presence of two subscribing witnesscs.'

CARL KTTGEL.

'l litnessesi MAX HELFENST IN, WILH'ELM Lemur. 

